CN103102708A - High modulus modified asphalt and preparation method - Google Patents
High modulus modified asphalt and preparation method Download PDFInfo
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- CN103102708A CN103102708A CN2013100495442A CN201310049544A CN103102708A CN 103102708 A CN103102708 A CN 103102708A CN 2013100495442 A CN2013100495442 A CN 2013100495442A CN 201310049544 A CN201310049544 A CN 201310049544A CN 103102708 A CN103102708 A CN 103102708A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92514—Pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
- B29C2948/9259—Angular velocity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92885—Screw or gear
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Working-Up Tar And Pitch (AREA)
Abstract
The invention belongs to the modified asphalt technical field, and particularly relates to a high modulus modified asphalt and a preparation method. The high modulus modified asphalt comprises the following raw materials by weight: 90-95% of asphalt, 4-4.5 parts of styrene-pyrrolylene-styrene triblock copolymer and 3-3.5 parts of high modulus asphalt modifier. The high modulus modified asphalt has the advantages of low preparation method, high temperature resistance and strong deformation resistance, and the preparation method is simple and easy to be carried out, and the preparation cost is low.
Description
Technical field
The invention belongs to the modified asphalt technology field, particularly a kind of high-modulus modifying asphalt and preparation method thereof.
Background technology
Pitch is as a kind of rheology shaped material with visco-elasticity and plasticity, easily soften during high temperature and be fluid, easily harden to become fragile during low temperature and be solid, be difficult for the softening rut that produces during asphalt high-temperature that the road surface requires to adopt, be difficult for the hard crisp cracking that causes when low temperature, yet general pitch is difficult to satisfy this requirement conflicting and mutual restriction, therefore, must carry out modification to be met the different asphaltic binders that require to pitch.
SBS is again SBS, is a kind of thermoplastic elastic material.Be present the most frequently used method of modifying with the SBS modifying asphalt, but the SBS that is used at present several trades mark of modifying asphalt often is in that supply falls short of demand state, so price increase, increased the cost of modifying asphalt.And the negative impact that waste or used plastics causes environment has had a strong impact on the ecotope of the earth, and the colleague also causes the waste of resource, thereby how waste or used plastics " is turned waste into wealth ", has caused the very big concern of countries in the world.Polyethylene has some similarity with pitch as a kind of macromolecular material on structure, can improve to a certain extent some performance of petroleum pitch, thereby how to be applied to the focus that the asphalt modification field has become industry to pay close attention to.All the time, the high-temperature storage of Waste plastic modified asphalt stability is a very large problem, because polyethylene will be separated in very short time after mixing, and serious segregation.Therefore polyethylene modified asphalt can only be made at the construction field (site), now-making-now-using, and on-the-spot device requirement that need to be higher increase the preparation difficulty, and preparation time is long, affects the progress of engineering.
Chinese patent application number: 201010256820.9, the agent of a kind of composite type pitch modified high-modulus and methods for making and using same thereof, its composite type pitch modified high-modulus agent comprises A component and B component, wherein the A component is for reclaiming PE 70-90%, magnesium hydroxide 0.1-8%, properties-correcting agent 0.5-15%, binder resin 0.5-12%, its softening temperature of the pitch for preparing all between 60-70 ℃, can't reach the performance of high-modulus modifying asphalt.And ductility and penetration degree are all lower, make low-temperature performance be difficult to guarantee.
the Chinese patent stable storing, bituminous composition that high temperature performance is good and preparation method thereof, Granted publication number: CN1175050C, comprise 64 ~ 99.6% asphalt stock, 0.1 ~ 7.0% low-molecular weight polymer, 0.1 ~ 7.0% high-molecular weight polymer, 0.1 ~ 2.0% compatilizer and 0.1 ~ 0.2% stablizer, wherein said compatilizer is petroleum fractions or the compound that is rich in the polarity colloid, boiling point＞300 ℃, be selected from nilox resin, contain sour Yatall MA, catalytically cracked oil, oil is extracted in solvent treatment out, refining naphthenic oil, one or more mixtures in the heavy distillate of preparing ethylene by steam cracking tar.
What this patent was selected is type SBS (low-molecular(weight)polymer) and star-shaped sbs (high molecular polymer), the price of two kinds of properties-correcting agent is all relatively high, thereby preparation cost has been improved, and is unfavorable for the common requirements in market, the stablizer that adopts is essentially inorganics, and reaction efficiency is low.
Chinese patent 201110230723.7, Waste plastic modified asphalt and preparation method thereof, mixture by matrix pitch, waste or used plastics, compatilizer and mineral filler is made, based on the 100 described matrix pitches of weight part, waste or used plastics is 4-12 weight parts, compatilizer 2-5 weight part, mineral filler is the 2-20 weight part, the bituminous pitch storing that obtains has good stability, and cost is low, and technique is simple.Above-mentioned patent is used not easy, and it needs two steps, first adopts 20% matrix pitch and properties-correcting agent to puddle evenly, and employing forcing machine extruding pelletization makes modified asphalt agglomerate, and then adds 80% matrix pitch, then mixes, and reacts.Matrix pitch adopts No. 90 pitches, has guaranteed its low-temperature performance, but its softening point difference of the pitch that obtains, high-temperature behavior can not satisfy the road demand in high temperature area.
Summary of the invention
The object of the present invention is to provide a kind of high-modulus modifying asphalt, it has, and preparation cost is low, high temperature resistance, characteristics that deformation resistance is strong.
Another object of the present invention is to provide a kind of preparation method of high-modulus modifying asphalt, it is simple that it has technique, the advantage that preparation cost is low.
For achieving the above object, the present invention adopts following technical proposals:
A kind of high-modulus modifying asphalt comprises that the raw material of following weight part is prepared from:
Pitch 90-95 part
SBS 4-4.5 part
High-modulus asphalt properties-correcting agent 3-3.5 part.
Wherein, also comprising other auxiliary agents such as stablizer and cold-resistant auxiliary agent, is mainly to add according to the demand of reality.
SBS also becomes SBS, and the preferred SBS3411 of the present invention also can select other roads to change SBS.
Wherein, described pitch is No. 70 pitches of Esso.Also can select the matrix pitch of other brands.
A kind of preparation method of high-modulus modifying asphalt comprises the following steps:
Step 1: preparation high-modulus asphalt properties-correcting agent.Comprise following preparation process:
Step a: 80-94% waste or used plastics, 0.1-14%% activator, 0.5-1.0% lubricant A, 5-10% lubricant B, 0.2-0.4% antioxidant and surplus toner are dropped into by mass percentage successively carry out uniform stirring in the powder cylinder, churning time is 2 ~ 10min, and stirring velocity is 600 ~ 1000r/min;
Step b: the material that step a is stirred carries out extruding pelletization with twin screw extruder, and extrusion temperature is 150 ~ 200 ℃, and the vacuum tightness that extruding pelletization adds man-hour is-0.08～-0.04MPa, screw speed is 350 ~ 500r/min;
Step c: the material that above-mentioned steps b is prepared, fetch water device water dumping, dicing machine pelletizing cooling by soaking successively, adopt and mix bucket and puddle, namely get high-modulus asphalt properties-correcting agent after making the physical property of product homogeneous, then the finished product warehouse-in.
Step 2: preparation high-modulus modifying asphalt.The rotating speed of pitch with 300 ~ 500rpm stirred, be heated to gradually 150-200 ℃, add by a certain percentage SBS and high-modulus asphalt properties-correcting agent, adopt the low shearing speed of 500 ~ 1000rpm to stir 30 ~ 40min, temperature is controlled at 150-180 ℃, makes SBS and the abundant swelling of high-modulus asphalt properties-correcting agent;
Step 3: isolated air, grow with 160 ℃/2 ~ 4H condition.
Further, a kind of preparation method of high-modulus modifying asphalt comprises following preparation process:
Step 1: preparation high-modulus asphalt properties-correcting agent.Comprise following preparation process:
Step a: 80-94% waste or used plastics, 0.1-14%% activator, 0.5-1.0% lubricant A, 5-10% lubricant B, 0.2-0.4% antioxidant and surplus toner are dropped into by mass percentage successively carry out uniform stirring in the powder cylinder, churning time is 2 ~ 10min, and stirring velocity is 600 ~ 1000r/min;
Step b: the material that step a is stirred carries out extruding pelletization with twin screw extruder, and extrusion temperature is 150 ~ 200 ℃, and the vacuum tightness that extruding pelletization adds man-hour is-0.08～-0.04MPa, screw speed is 350 ~ 500r/min;
Step c: the material that above-mentioned steps b is prepared, fetch water device water dumping, dicing machine pelletizing cooling by soaking successively, adopt and mix bucket and puddle, namely get high-modulus asphalt properties-correcting agent after making the physical property of product homogeneous, then the finished product warehouse-in.
Step 2: preparation high-modulus modifying asphalt.The rotating speed of pitch with 300 ~ 500rpm stirred, be heated to gradually 150-200 ℃, add by a certain percentage SBS and high-modulus asphalt properties-correcting agent, adopt the low shearing speed of 500 ~ 1000rpm to stir 30 ~ 40min, temperature is controlled at 150-180 ℃, makes SBS and the abundant swelling of high-modulus asphalt properties-correcting agent;
Step 3: drop into other auxiliary agents, adopt 4000 ~ 5000rpm speed to stir 1 ~ 2H, temperature is controlled at 150-180 ℃, during without obvious insolubles, finishes to stir.
Step 4: isolated air, grow by 160 ℃/2 ~ 4H condition.
Wherein, waste or used plastics is the discarded thing that utilizes of secondary material, is mainly low-density polyethylene, comprises polyethylene A or polyethylene B or its mixture, and the softening temperature of described polyethylene A is greater than 90 ℃, and the softening temperature of described polyethylene B is greater than 70 ℃.Wherein, the tensile strength of described polyethylene A and described polyethylene B (40 ℃/4H processing) is more than 12Mpa.The elongation of described polyethylene A and described polyethylene B (40 ℃/4H processing) is greater than 300%.Adopting-40 ℃/4H condition to process and carry out the tensile property test, is a kind of mode of simple, simple and fast selection material, is a kind of testing method of introducing plastic material industry mechanical property, and this method can be equivalent to the management and control of bitumen ductility index.The selection of softening temperature is for guaranteeing the high-temperature behavior of material, namely having guaranteed the high-modulus modification of pitch.
wherein, described polyethylene A and polyethylene B are the ethene packing film, the ethene plastic film for agricultural use, the waste of the secondary material such as ethene container, waste or used plastics secondary material, mixed and disorderly various brands refer to originate, various viscosity, the compound of various product broken materials, in mobility, mechanical property, all unstable on color, can only low-gradely use, the present invention chooses packing film, plastic film for agricultural use, the waste of the secondary material such as container, these wastes are reused, meet environmental requirement, and select according to its physical property, the properties-correcting agent of processability excellence, guarantee the quality of product.
Wherein, described waste or used plastics is that polyethylene A and polyethylene B are according to the mixture of mass ratio 30-40:52.
Described lubricant A is ethylenebisstearamide, and described lubricant B is one or both mixtures that mix in any proportion in discarded machine oil or aromatic hydrocarbon oil.
Lubricant A is a kind of processing aid, and for reducing the friction of material and forcing machine gun barrel, what add according to cost and practical effect addition.Lubricant B is also a kind of processing aid, is aromatic hydrocarbon oil or discarded machine oil, except playing lubrication, can improve low-temperature performance and the ductility of pitch simultaneously, and addition can not be too many, if surpass addition, lubricant B easily separates out material surface.Aromatic hydrocarbon oil can effectively improve the cryostatic stabilization performance of pitch.
Wherein, described activator is ethylene-dien terpolymer or esters polymer.Activator is organism, and reaction efficiency is high.Its mechanism of action is: produce active radical under certain heat condition, cross-linked graft occurs in functional group with modifier molecules chain, activity of bitumen, makes properties-correcting agent and pitch form stable colloidal dispersion; Make polymer phase and matrix pitch in modifying asphalt form the stable Phase boundary surface adsorption layer of one deck between mutually, reduce the surface tension of phase interface, increase the avidity between two-phase, thereby improved the consistency between two-phase, thereby also can claim compatilizer or activator.The PTW that the preferred ester class of the present invention is Du Pont, chemical name are 2-methyl-2-acrylic acid epoxy ethyl group methyl ester, and it is the product of AM that described ethylene-dien terpolymer is selected Du Pont's trade mark.
Wherein, described oxidation inhibitor is one or both mixtures that mix in any proportion in three (2,4-di-tert-butyl) phosphorous acid esters or [β-(3.5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester.
Beneficial effect of the present invention:
1, add high-modulus asphalt properties-correcting agent, can effectively reduce the add-on of SBS, greatly reduce the manufacturing cost of high-modulus modifying asphalt, the 200-500 unit that reduces per ton.
2, with pitch as matrix, when preparing at the scene, only need to add other auxiliary agents such as SBS, high-modulus asphalt properties-correcting agent, through simply mixing, can come into operation, simplified time and the equipment cost of road bitumen laying project.
3, softening temperature of the present invention is greater than 78 ℃ and up to 88 ℃, prove have good high temperature resistance, anti-rut performance, be specially adapted to the heavy-duty highway in high temperature area.
4, segregation of the present invention experiment (160 ℃/48h) temperature difference of levels lower than 1.5 ℃, proves that it has good stability, has strengthened the supporting capacity on road surface, reduces the ageing of asphalt phenomenon that the road surface causes because of ultraviolet radiation.
5, elasticity of the present invention and good toughness, improve the anti-fatigue ability on road surface, particularly had good adaptability to changes on large flow, the serious highway that overloads, can reduce the tension set on road surface, viscosifying power is strong especially, can obviously improve the resistance to tension after water is met on the road surface.
Another beneficial effect: preparation method of the present invention, technique is simple, and high-modulus asphalt properties-correcting agent can separate with high-modulus asphalt and prepare, then mixes, and reduces the equipment cost of producing, and controllability is strong.
Embodiment
The present invention is further illustrated with specific embodiment for the below, but the present invention is not subjected to the restriction of following embodiment.
In embodiment 1-5, Preparation Example for high-modulus asphalt properties-correcting agent, oxidation inhibitor is comprised of oxidation inhibitor A and oxidation inhibitor B, oxidation inhibitor B is four [β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic ester] pentaerythritol ester, oxidation inhibitor A is three ［ 2.4-di-tert-butyl-phenyl ］ phosphorous acid ester, and lubricant A is the hard esteramides of ethylenebis, and lubricant B is discarded machine oil or aromatic hydrocarbon oil or its arbitrary proportion mixture.
Embodiment 6-9 is the Preparation Example of high-modulus asphalt of the present invention.Pitch can be Esso 70# pitch, also can be the pitch of other brands, and the optional SBS3411 of SBS also can select other roads to change SBS.
Embodiment 1
Step a: with 34% polyethylene A, 52% polyethylene B, 7% ethylene-dien terpolymer, the 1% hard esteramides of ethylenebis, 5% discarded machine oil, 0.2% 3 ［ 2.4-di-tert-butyl-phenyl ］ phosphorous acid ester, 0.2% 4 [β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic ester] pentaerythritol ester and surplus toner drop into successively and carry out uniform stirring in the powder cylinder, churning time is 2 ~ 10min, and stirring velocity is 600r/min.
Step b: the material that step a is stirred carries out extruding pelletization with twin screw extruder, and extrusion temperature is 150 ~ 200 ℃, and the vacuum tightness that extruding pelletization adds man-hour is-0.08～-0.04MPa, screw speed is 350r/min.
Step c: the material that above-mentioned steps b is prepared, fetch water device water dumping, dicing machine pelletizing cooling by soaking successively, adopt and mix bucket and puddle, make finished product warehouse-in after the physical property of product homogeneous.
Embodiment 2
Step a: with 82% polyethylene B, 10% ethylene-dien terpolymer, the 1% hard esteramides of ethylenebis, 6% aromatic hydrocarbon oil, 0.1% 3 ［ 2.4-di-tert-butyl-phenyl ］ phosphorous acid ester, 0.2% 4 [β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic ester] pentaerythritol ester and surplus toner drop into successively and carry out uniform stirring in the powder cylinder, churning time is 2 ~ 10min, and stirring velocity is 800r/min.
Step b: the material that step a is stirred carries out extruding pelletization with twin screw extruder, and extrusion temperature is 150 ~ 200 ℃, and the vacuum tightness that extruding pelletization adds man-hour is-0.08～-0.04MPa, screw speed is 400r/min.
Step c: the material that above-mentioned steps b is prepared, fetch water device water dumping, dicing machine pelletizing cooling by soaking successively, adopt and mix bucket and puddle, make finished product warehouse-in after the physical property of product homogeneous.
Embodiment 3
Step a: with 82% polyethylene A, 9% lipin polymer, the 1% hard esteramides of ethylenebis, mixture, 0.2% 3 ［ 2.4-di-tert-butyl-phenyl ］ phosphorous acid ester, 0.2% 4 [β-(3 of 7% discarded machine oil and aromatic hydrocarbon oil mass ratio 1:1, the 5-di-tert-butyl-hydroxy phenyl) propionic ester] pentaerythritol ester and surplus toner drop into successively and carry out uniform stirring in the powder cylinder, churning time is 2 ~ 10min, and stirring velocity is 800r/min.
Step b: the material that step a is stirred carries out extruding pelletization with twin screw extruder, and extrusion temperature is 150 ~ 200 ℃, and the vacuum tightness that extruding pelletization adds man-hour is-0.08～-0.04MPa, screw speed is 450r/min.
Step c: the material that above-mentioned steps b is prepared, fetch water device water dumping, dicing machine pelletizing cooling by soaking successively, adopt and mix bucket and puddle, make finished product warehouse-in after the physical property of product homogeneous.
Embodiment 4
Step a: with 40% polyethylene A, 46% polyethylene B, 6% lipin polymer, the 1% hard esteramides of ethylenebis, 6% discarded machine oil, 0.1% 3 ［ 2.4-di-tert-butyl-phenyl ］ phosphorous acid ester, 0.2% 4 [β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic ester] pentaerythritol ester and surplus toner drop into successively and carry out uniform stirring in the powder cylinder, churning time is 2 ~ 10min, and stirring velocity is 1000r/min.
Step b: the material that step a is stirred carries out extruding pelletization with twin screw extruder, and extrusion temperature is 150 ~ 200 ℃, and the vacuum tightness that extruding pelletization adds man-hour is-0.08～-0.04MPa, screw speed is 500r/min.
Step c: the material that above-mentioned steps b is prepared, fetch water device water dumping, dicing machine pelletizing cooling by soaking successively, adopt and mix bucket and puddle, make finished product warehouse-in after the physical property of product homogeneous.
Embodiment 5
Step a: with 35% polyethylene A, 49% polyethylene B, 10% ethylene-dien terpolymer, the 1% hard esteramides of ethylenebis, mixture, 0.1% 3 ［ 2.4-di-tert-butyl-phenyl ］ phosphorous acid ester, 0.2% 4 [β-(3 of 4% discarded machine oil and aromatic hydrocarbon oil weight ratio 2:1, the 5-di-tert-butyl-hydroxy phenyl) propionic ester] pentaerythritol ester and surplus toner drop into successively and carry out uniform stirring in the powder cylinder, churning time is 2 ~ 10min, and stirring velocity is 600r/min.
Step b: the material that step a is stirred carries out extruding pelletization with twin screw extruder, and extrusion temperature is 150 ~ 200 ℃, and the vacuum tightness that extruding pelletization adds man-hour is-0.08～-0.04MPa, screw speed is 400r/min.
Step c: the material that above-mentioned steps b is prepared, fetch water device water dumping, dicing machine pelletizing cooling by soaking successively, adopt and mix bucket and puddle, make finished product warehouse-in after the physical property of product homogeneous.
Embodiment 6
Step 1: the rotating speed of the pitches of 90 parts with 300rpm stirred, be heated to gradually 150-200 ℃, add 4 parts of SBSs and 3 parts of high-modulus asphalt properties-correcting agent, adopt the low shearing speed of 500rpm to stir 30 ~ 40min, temperature is controlled at 150-180 ℃, makes SBS and the abundant swelling of high-modulus asphalt properties-correcting agent;
Step 2: adopt 4000rpm speed to stir 1 ~ 2H, temperature is controlled at 150-180 ℃, and without obvious insolubles, the modification particle diameter finishes to stir when 1-2 μ m.
Step 3: isolated air, grow by 160 ℃/2 ~ 4H condition.
Embodiment 7
Step 1: the rotating speed of the pitches of 85 parts with 400rpm stirred, be heated to gradually 150-200 ℃, add 4 parts of SBSs and 3.5 parts of high-modulus asphalt properties-correcting agent, adopt the low shearing speed of 800rpm to stir 30 ~ 40min, temperature is controlled at 150-180 ℃, makes SBS and the abundant swelling of high-modulus asphalt properties-correcting agent;
Step 2: adopt 4500rpm speed to stir 1 ~ 2H, temperature is controlled at 150-180 ℃, and during without obvious insolubles, the modification particle diameter finishes to stir when 1-2 μ m.
Step 3: isolated air, grow by 160 ℃/2 ~ 4H condition.
Embodiment 8
Step 1: the rotating speed of the pitches of 89.5 parts with 500rpm stirred, be heated to gradually 150-200 ℃, add 4.5 parts of SBSs and 3.0 parts of high-modulus asphalt properties-correcting agent, adopt the low shearing speed of 1000rpm to stir 30 ~ 40min, temperature is controlled at 150-180 ℃, makes SBS and the abundant swelling of high-modulus asphalt properties-correcting agent;
Step 2: drop into 3 parts of other auxiliary agents, adopt 5000rpm speed to stir 1 ~ 2H, temperature is controlled at 150-180 ℃, and during without obvious insolubles, the modification particle diameter finishes to stir when 1-2 μ m.
Step 3: isolated air, grow by 160 ℃/2 ~ 4H condition.
Embodiment 9
Step 1: the rotating speed of the pitches of 95 parts with 450rpm stirred, be heated to gradually 150-200 ℃, add 4.5 parts of SBSs and 3.5 parts of high-modulus asphalt properties-correcting agent, adopt the low shearing speed of 600rpm to stir 30 ~ 40min, temperature is controlled at 150-180 ℃, makes SBS and the abundant swelling of high-modulus asphalt properties-correcting agent;
Step 2: drop into 3 parts of other auxiliary agents, adopt 4200rpm speed to stir 1 ~ 2H, temperature is controlled at 150-180 ℃, and during without obvious insolubles, the modification particle diameter finishes to stir when 1-2 μ m.
Step 3: isolated air, grow by 160 ℃/2 ~ 4H condition.
Performance test
The over-all properties of the high-modulus asphalt that makes is as shown in table 1:
(employing be the I-D index)
, there is not national standard at home in the high-modulus modifying asphalt at present, perhaps needs to reach what index.Main judgment criteria is to pay close attention to softening temperature and segregation experiment at present.Softening temperature is higher, proves that the rutting resistance of pitch is better, embodies high-modulus modification performance better.Segregation experiment, examination be the pitch storage stability, the actual use properties of assessment pitch, if there is segregation, performance of modified bitumen can fall far short, and is unfavorable for Pavement Performance.
As can be seen from the above table, the softening temperature of high-modulus modifying asphalt of the present invention is all more than 80 ℃, the anti-rut performance, the high temperature resistant property that show high-modulus modifying asphalt of the present invention are excellent, the data of segregation experiment are lower than 1.5, even can reach 0, the stability in storage that represents high-modulus modifying asphalt of the present invention is very good, and Pavement Performance is very stable, is not easy to produce distortion or cracking.
The above is only preferred embodiment of the present invention, therefore all equivalences of doing according to the described structure of patent claim of the present invention, feature and principle change or modify, is included in patent claim of the present invention.
Claims (4)
1. high-modulus modifying asphalt, it is characterized in that: the raw material that comprises following weight part is prepared from:
Pitch 90-95 part
SBS 4-4.5 part
High-modulus asphalt properties-correcting agent 3-3.5 part.
2. a kind of high-modulus modifying asphalt according to claim 1, it is characterized in that: described pitch is No. 70 pitches of Esso.
3. the preparation method of the described high-modulus modifying asphalt of claim 1-2 any one is characterized in that: comprise the following steps:
Step 1: preparation high-modulus asphalt properties-correcting agent comprises following preparation process:
Step a: 80-94% waste or used plastics, 0.1-14%% activator, 0.5-1.0% lubricant A, 5-10% lubricant B, 0.2-0.4% antioxidant and surplus toner are dropped into by mass percentage successively carry out uniform stirring in the powder cylinder, churning time is 2 ~ 10min, and stirring velocity is 600 ~ 1000r/min;
Step b: the material that step a is stirred carries out extruding pelletization with twin screw extruder, and extrusion temperature is 150 ~ 200 ℃, and the vacuum tightness that extruding pelletization adds man-hour is-0.08～-0.04MPa, screw speed is 350 ~ 500r/min;
Step c: the material that above-mentioned steps b is prepared, fetch water device water dumping, dicing machine pelletizing cooling by soaking successively, adopt and mix bucket and puddle, namely get high-modulus asphalt properties-correcting agent after making the physical property of product homogeneous, then the finished product warehouse-in;
Step 2: preparation high-modulus modifying asphalt, the rotating speed of pitch with 300 ~ 500rpm stirred, be heated to gradually 150-200 ℃, add by a certain percentage SBS and high-modulus asphalt properties-correcting agent, adopt the low shearing speed of 500 ~ 1000rpm to stir 30 ~ 40min, temperature is controlled at 150-180 ℃, makes SBS and the abundant swelling of high-modulus asphalt properties-correcting agent;
Step 3: isolated air, grow with 160 ℃/2 ~ 4H condition.
4. the preparation method of a kind of high-modulus modifying asphalt according to claim 3 is characterized in that: comprise following preparation process:
Step 1: preparation high-modulus asphalt properties-correcting agent comprises following preparation process:
Step a: 80-94% waste or used plastics, 0.1-14%% activator, 0.5-1.0% lubricant A, 5-10% lubricant B, 0.2-0.4% antioxidant and surplus toner are dropped into by mass percentage successively carry out uniform stirring in the powder cylinder, churning time is 2 ~ 10min, and stirring velocity is 600 ~ 1000r/min; Step b: the material that step a is stirred carries out extruding pelletization with twin screw extruder, and extrusion temperature is 150 ~ 200 ℃, and the vacuum tightness that extruding pelletization adds man-hour is-0.08～-0.04MPa, screw speed is 350 ~ 500r/min;
Step c: the material that above-mentioned steps b is prepared, fetch water device water dumping, dicing machine pelletizing cooling by soaking successively, adopt and mix bucket and puddle, namely get high-modulus asphalt properties-correcting agent after making the physical property of product homogeneous, then the finished product warehouse-in;
Step 2: preparation high-modulus modifying asphalt, the rotating speed of pitch with 300 ~ 500rpm stirred, be heated to gradually 150-200 ℃, add by a certain percentage SBS and high-modulus asphalt properties-correcting agent, adopt the low shearing speed of 500 ~ 1000rpm to stir 30 ~ 40min, temperature is controlled at 150-180 ℃, makes SBS and the abundant swelling of high-modulus asphalt properties-correcting agent;
Step 3: drop into other auxiliary agents, adopt 4000 ~ 5000rpm speed to stir 1 ~ 2H, temperature is controlled at 150-180 ℃, during without obvious insolubles, finishes to stir;
Step 4: isolated air, grow by 160 ℃/2 ~ 4H condition.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105860109A (en) * | 2016-05-06 | 2016-08-17 | 华中科技大学 | Preparation method and product of modified asphalt |
| CN106317921A (en) * | 2016-08-24 | 2017-01-11 | 新疆交通建设集团股份有限公司 | Bituminous mixture modifier production method based on recycled agricultural plastic mulching film |
| CN111234439A (en) * | 2020-02-28 | 2020-06-05 | 江苏凯信环保材料有限公司 | High-viscosity high-modulus asphalt modifier and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1833006A (en) * | 2003-06-06 | 2006-09-13 | 纳幕尔杜邦公司 | Polymer-linked asphalt compositions |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1833006A (en) * | 2003-06-06 | 2006-09-13 | 纳幕尔杜邦公司 | Polymer-linked asphalt compositions |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105860109A (en) * | 2016-05-06 | 2016-08-17 | 华中科技大学 | Preparation method and product of modified asphalt |
| CN106317921A (en) * | 2016-08-24 | 2017-01-11 | 新疆交通建设集团股份有限公司 | Bituminous mixture modifier production method based on recycled agricultural plastic mulching film |
| CN111234439A (en) * | 2020-02-28 | 2020-06-05 | 江苏凯信环保材料有限公司 | High-viscosity high-modulus asphalt modifier and preparation method thereof |
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